let arr = Array.of(1, 2);
console.log(arr.length);//2  

let arr1 = Array.of(3);
console.log(arr1.length);//1  
console.log(arr1[0]);//3  

let arr2 = Array.of(2);
console.log(arr2.length);//1  
console.log(arr2[0]);// 2  

